Proyectos de Subversion Moodle

<?php

// This file is part of Moodle - http://moodle.org/

//

// Moodle is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

//

// Moodle is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

namespace core;

/**

 * A set of tests for some of the gd functionality within Moodle.

 *

 * @package    core

 * @category   test

 * @copyright  2015 Andrew Nicols <andrew@nicols.co.uk>

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

class gdlib_test extends \basic_testcase {

    private $fixturepath = null;

    public function setUp(): void {

        $this->fixturepath = __DIR__ . DIRECTORY_SEPARATOR . 'fixtures' . DIRECTORY_SEPARATOR;

    }

    public function test_generate_image_thumbnail(): void {

        global $CFG;

        require_once($CFG->libdir . '/gdlib.php');

        // Test with meaningless data.

        // Now use a fixture.

        $pngpath = $this->fixturepath . 'gd-logo.png';

        $pngthumb = generate_image_thumbnail($pngpath, 24, 24);

        $this->assertTrue(is_string($pngthumb));

        // And check that the generated image was of the correct proportions and mimetype.

        $imageinfo = getimagesizefromstring($pngthumb);

        $this->assertEquals(24, $imageinfo[0]);

        $this->assertEquals(24, $imageinfo[1]);

        $this->assertEquals('image/png', $imageinfo['mime']);

    }

    public function test_generate_image_thumbnail_from_string(): void {

        global $CFG;

        require_once($CFG->libdir . '/gdlib.php');

        // Test with meaningless data.

        // First empty values.

        $this->assertFalse(generate_image_thumbnail_from_string('', 24, 24));

        $this->assertFalse(generate_image_thumbnail_from_string('invalid', 0, 24));

        $this->assertFalse(generate_image_thumbnail_from_string('invalid', 24, 0));

        // Now an invalid string.

        $this->assertFalse(generate_image_thumbnail_from_string('invalid', 24, 24));

        // Now use a fixture.

        $pngpath = $this->fixturepath . 'gd-logo.png';

        $pngdata = file_get_contents($pngpath);

        $pngthumb = generate_image_thumbnail_from_string($pngdata, 24, 24);

        $this->assertTrue(is_string($pngthumb));

        // And check that the generated image was of the correct proportions and mimetype.

        $imageinfo = getimagesizefromstring($pngthumb);

        $this->assertEquals(24, $imageinfo[0]);

        $this->assertEquals(24, $imageinfo[1]);

        $this->assertEquals('image/png', $imageinfo['mime']);

    }

    public function test_resize_image(): void {

        global $CFG;

        require_once($CFG->libdir . '/gdlib.php');

        $pngpath = $this->fixturepath . 'gd-logo.png';

        // Preferred height.

        $newpng = resize_image($pngpath, null, 24);

        $this->assertTrue(is_string($newpng));

        $imageinfo = getimagesizefromstring($newpng);

        $this->assertEquals(90, $imageinfo[0]);

        $this->assertEquals(24, $imageinfo[1]);

        $this->assertEquals('image/png', $imageinfo['mime']);

        // Preferred width.

        $newpng = resize_image($pngpath, 100, null);

        $this->assertTrue(is_string($newpng));

        $imageinfo = getimagesizefromstring($newpng);

        $this->assertEquals(100, $imageinfo[0]);

        $this->assertEquals(27, $imageinfo[1]);

        $this->assertEquals('image/png', $imageinfo['mime']);

        // Preferred width and height.

        $newpng = resize_image($pngpath, 50, 50);

        $this->assertTrue(is_string($newpng));

        $imageinfo = getimagesizefromstring($newpng);

        $this->assertEquals(50, $imageinfo[0]);

        $this->assertEquals(13, $imageinfo[1]);

        $this->assertEquals('image/png', $imageinfo['mime']);

    }

    public function test_resize_image_from_image(): void {

        global $CFG;

        require_once($CFG->libdir . '/gdlib.php');

        $pngpath = $this->fixturepath . 'gd-logo.png';

        $origimageinfo = getimagesize($pngpath);

        $imagecontent = file_get_contents($pngpath);

        // Preferred height.

        $imageresource = imagecreatefromstring($imagecontent);

        $newpng = resize_image_from_image($imageresource, $origimageinfo, null, 24);

        $this->assertTrue(is_string($newpng));

        $imageinfo = getimagesizefromstring($newpng);

        $this->assertEquals(90, $imageinfo[0]);

        $this->assertEquals(24, $imageinfo[1]);

        $this->assertEquals('image/png', $imageinfo['mime']);

        // Preferred width.

        $imageresource = imagecreatefromstring($imagecontent);

        $newpng = resize_image_from_image($imageresource, $origimageinfo, 100, null);

        $this->assertTrue(is_string($newpng));

        $imageinfo = getimagesizefromstring($newpng);

        $this->assertEquals(100, $imageinfo[0]);

        $this->assertEquals(27, $imageinfo[1]);

        $this->assertEquals('image/png', $imageinfo['mime']);

        // Preferred width and height.

        $imageresource = imagecreatefromstring($imagecontent);

        $newpng = resize_image_from_image($imageresource, $origimageinfo, 50, 50);

        $this->assertTrue(is_string($newpng));

        $imageinfo = getimagesizefromstring($newpng);

        $this->assertEquals(50, $imageinfo[0]);

        $this->assertEquals(13, $imageinfo[1]);

        $this->assertEquals('image/png', $imageinfo['mime']);

    }

}